Automatically cancel taxi bookings customers never confirmed

flowchart TD trig(["checks bookings every 5 minutes"]):::trigtime s0[["check unconfirmed bookings"]]:::mi s1["mark booking cancelled"]:::task s2["delete calendar event"]:::svc s3["ai drafts reply"]:::task s4["notify customer"]:::task trig --> s0 s0 --> s1 s1 --> s2 s2 --> s3 s3 --> s4 out[/"booking cancelled and customer notified"/]:::out pay{{"keeps schedule clear automatically"}}:::pay s4 --> out out --> pay classDef task fill:#e7f6fe,stroke:#34b8f0,color:#2c2a29 classDef svc fill:#f6f8fa,stroke:#7c8795,color:#2c2a29 classDef mi fill:#e7f6fe,stroke:#0079a8,color:#2c2a29,stroke-width:2px classDef human fill:#fff,stroke:#0079a8,color:#0079a8 classDef store fill:#f6f8fa,stroke:#0079a8,color:#2c2a29 classDef trig fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigtime fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigdata fill:#8ad4f5,stroke:#0079a8,color:#06314c,font-weight:bold classDef gate fill:#fff,stroke:#e8a23d,color:#6b4708,font-weight:bold classDef out fill:#1f9d6b,stroke:#167a53,color:#fff,font-weight:bold classDef pay fill:#06314c,stroke:#021f33,color:#fff